Using models that blend global economics, geography, ecology and environmental sciences is essential to understanding how changes in trade and natural systems in one part of the world affect those in another, a review concludes.

The probability of saving money by using solar energy rather than standard grid electricity is 92 percent for Indiana farm businesses and about 50 percent for homes, Purdue University energy economists find.

Research by Purdue University scientist Jon Schoonmaker and his colleagues has shown that small amounts of calcium oxide can neutralize the acid in distillers grains, a commonly used alternative to corn in many livestock feed mixes.

Plummeting gasoline prices are the result of lagging economic growth in many parts of the world, the end of the summer driving season, less expensive winter gasoline and well-functioning Midwest refineries, Purdue University energy economist Wally Tyner says.

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